La marge du Grand Banc et la fracture de Terre-Neuve
Some seismic and magnetic profiles carried out south of the Big Bank of Newfoundland during the Noratlante cruise show a fracture zone which collapses the continental margin and continues to the south-east towards the Azores. This fracture zone proves evidence of the drift movement of Africa towards...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | French |
| Published: |
Académie des Sciences
1970
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| Subjects: | |
| Online Access: | https://archimer.ifremer.fr/doc/1970/publication-4877.pdf https://archimer.ifremer.fr/doc/00000/4877/ |
| Summary: | Some seismic and magnetic profiles carried out south of the Big Bank of Newfoundland during the Noratlante cruise show a fracture zone which collapses the continental margin and continues to the south-east towards the Azores. This fracture zone proves evidence of the drift movement of Africa towards the east during the Jurassic or Trias opening of the Atlantic. From the south-east corner of the Big Bank, the fracture zone supports a sediment ridge formed by the underflows and which continues to the meridian 430 West. Des profils sismiques et magnétiques réalisés au Sud du Grand Banc de Terre-Neuve durant la campagne Noratlante montrent une zone de fracture qui effondre la marge continentale et se prolonge vers le Sud-Est en direction des Açores. Cette zone de fracture témoigne du mouvement de dérive de l'Afrique vers l'Est lors de l'ouverture de l'Atlantique au Jurassique ou au Trias. A partir du coin sud-est du Grand Banc, la zone de fracture est le support d'uneride sédimentaire, construite par les courants de fond, qui se prolonge jusqu'au méridien 430 Ouest. [OCR NON CONTRÔLE] |
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